JPH0444960Y2 - - Google Patents
Info
- Publication number
- JPH0444960Y2 JPH0444960Y2 JP17414587U JP17414587U JPH0444960Y2 JP H0444960 Y2 JPH0444960 Y2 JP H0444960Y2 JP 17414587 U JP17414587 U JP 17414587U JP 17414587 U JP17414587 U JP 17414587U JP H0444960 Y2 JPH0444960 Y2 JP H0444960Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- ring
- annular plate
- bimetal
- valve disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000000694 effects Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Temperature-Responsive Valves (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は蒸気配管系に取り付けてそこに発生す
る復水を自動的に排出するデイスク式スチームト
ラツプに関し、特にバイメタルを用いてエアーロ
ツキングを防止することに関する。[Detailed description of the invention] Industrial application field This invention relates to a disc-type steam trap that is installed in a steam piping system and automatically discharges condensate generated therein, and in particular uses bimetal to prevent air locking. Concerning what to do.
デイスク式スチームトラツプは内外輪弁座から
なる弁座面に対して離着座する弁デイスクを、弁
デイスクの背後に形成した変圧室の圧力変化によ
つて自力的に制御して開閉弁させ復水を自動的に
排出するものである。 A disc-type steam trap automatically controls a valve disc, which separates from and seats against a valve seat surface consisting of an inner and outer ring valve seat, to open and close the valve based on pressure changes in a variable pressure chamber formed behind the valve disc. It drains water automatically.
このデイスク式スチームトラツプに於いては、
始動時に空気が流入してきても、蒸気の場合と同
様に瞬時に閉弁してしまい、一旦閉弁すると空気
は蒸気と異なり凝縮作用を起こさないので、その
後は開弁できない、いわゆるエアーロツキングが
起こる。 In this disc type steam trap,
Even if air flows in during startup, the valve closes instantaneously, just like in the case of steam, and once the valve is closed, unlike steam, air does not cause condensation, so the valve cannot be opened after that, which is called air locking. happen.
そこで、従来からバイメタルを用いてこのエア
ーロツキングを防止することが行なわれている。
これは、バイメタルの温度変化による湾曲作用を
利用して、低温時に弁デイスクを強制的に押し上
げて開弁させ、高温時に弁デイスクに干渉しない
様にするものである。 Therefore, conventionally, bimetals have been used to prevent this air locking.
This utilizes the bending effect of the bimetal due to temperature changes to forcibly push up the valve disk to open the valve when the temperature is low, and prevents it from interfering with the valve disk when the temperature is high.
従来の技術
この一例が、特公昭50−8809号公報に示されて
いる。これは、外輪弁座の外周にテーパ面を形成
し、このテーパ面にバイメタル環を配置し、バイ
メタル環と弁デイスクの間に環状板を配置したも
のである。Prior Art An example of this is shown in Japanese Patent Publication No. 50-8809. This has a tapered surface formed on the outer periphery of the outer ring valve seat, a bimetal ring disposed on this tapered surface, and an annular plate disposed between the bimetal ring and the valve disk.
温度変化によるバイメタル環の拡開縮閉作用と
テーパ面との協動でエアーロツキングを防止す
る。すなわち、バイメタル環は低温時に縮閉して
テーパ面に沿つて上動し、環状板を弁座面よりも
上方に位置せしめて弁デイスクを強制的に開弁さ
せ、高温時には拡開してテーパ面に沿つて下動
し、環状板を弁座面よりも下方に位置せしめて弁
デイスクに干渉しない。 Air locking is prevented by the expansion/contraction action of the bimetal ring due to temperature changes and the cooperation of the tapered surface. In other words, the bimetal ring contracts and closes at low temperatures and moves upward along the tapered surface, positions the annular plate above the valve seat surface and forces the valve disc to open, and at high temperatures it expands and moves upward along the tapered surface. The annular plate moves downward along the surface to position the annular plate below the valve seat surface so that it does not interfere with the valve disk.
本考案が解決しようとする問題点
この場合、バイメタル環が比較的短期間で摩耗
して、エアーロツキングを防止できなくなる問題
がある。すなわち、バイメタル環はその下端内周
縁のみがテーパ面と摺接しながら拡開縮閉するの
で、この部分に力が集中するためである。下端内
周縁が摩耗すると、僅かな温度上昇でバイメタル
環がテーパ面を下動してしまうためである。Problems to be Solved by the Present Invention In this case, there is a problem that the bimetal ring wears out in a relatively short period of time, making it impossible to prevent air locking. That is, since the bimetal ring expands and contracts only at its lower inner peripheral edge while slidingly contacting the tapered surface, force is concentrated on this portion. This is because when the inner peripheral edge of the lower end wears out, a slight increase in temperature causes the bimetal ring to move downward on the tapered surface.
本考案の技術的課題は、従つて、バイメタル環
の摩耗を防止して、長期間に渡つて所望のエアー
ロツキング防止機能を維持できるようにすること
である。 SUMMARY OF THE PRESENT EMBODIMENT The technical object of the present invention is therefore to prevent wear of the bimetal ring and to maintain the desired air-locking prevention function for a long period of time.
問題点を解決するための手段
上記の技術的課題を解決するために講じた本考
案の技術的手段は、外輪弁座の外周を平坦面に形
成してバイメタル環を配置し、バイメタル環の拡
開時の内径よりも小さく縮閉時の外径よりも大き
な外径に形成した環状板を、バイメタル環と弁デ
イスクとの間に配置し、弁デイスクを開弁位置に
付勢する弾性部材を、環状板の下面に配置した、
ものである。Means for Solving the Problems The technical means of the present invention taken to solve the above-mentioned technical problems is to form the outer periphery of the outer ring valve seat into a flat surface, arrange the bimetal ring, and expand the bimetal ring. An annular plate having an outer diameter smaller than the inner diameter when open and larger than the outer diameter when closed and closed is arranged between the bimetal ring and the valve disk, and an elastic member that biases the valve disk to the open position is arranged. , placed on the bottom surface of the annular plate,
It is something.
作 用 上記の技術的手段の作用は下記の通りである。Effect The operation of the above technical means is as follows.
休止時には弾性部材が弁デイスクを持上げて開
弁している。このとき、バイメタル環は環状板の
外径よりも小さく縮閉して環状板の下方に入り込
んでいる。始動時に低温の復水や空気が流入して
きて、空気が弁デイスクの下面を通過すると、弁
デイスクには開弁力が作用して環状板を介して弾
性部材を圧縮するが、環状板の下面がバイメタル
環に当接した後は、それ以上下方に変位できな
い。すなわち、弁デイスクは閉弁できず、エアー
ロツキングを防止する。その後、高温の復水が流
入してきて、温度が上昇すると、バイメタル環は
拡開し始める。そして、内径が環状板の外径より
も大きくなつたときに、環状板の下面から外れ、
弁デイスクに干渉しなくなる。 When the valve is at rest, the elastic member lifts the valve disk to open the valve. At this time, the bimetal ring contracts and closes to be smaller than the outer diameter of the annular plate and enters below the annular plate. When low-temperature condensate and air flow in during startup, and the air passes through the lower surface of the valve disk, an opening force acts on the valve disk and compresses the elastic member through the annular plate, but the lower surface of the annular plate After contacting the bimetallic ring, it cannot be displaced downward any further. That is, the valve disc cannot be closed, preventing air locking. Then, as hot condensate flows in and the temperature rises, the bimetallic ring begins to expand. When the inner diameter becomes larger than the outer diameter of the annular plate, it comes off the bottom surface of the annular plate, and
No more interference with the valve disk.
バイメタル環にはその下面全体に力が掛かるの
で摩耗することが少ない。 Since force is applied to the entire bottom surface of the bimetal ring, there is less wear.
以後周知のデイスク式スチームトラツプの作動
原理に基づいて蒸気は逃さず復水のみを排出す
る。 From then on, based on the operating principle of the well-known disk type steam trap, only condensate water is discharged without allowing steam to escape.
考案の効果 本考案は下記の特有の効果を生じる。Effect of invention The present invention produces the following specific effects.
バイメタル環の摩耗を防止できのるで、長期間
に渡つて所望のエアーロツキング防止機能を維持
できる。 Since wear of the bimetal ring can be prevented, the desired air locking prevention function can be maintained for a long period of time.
従来のものでは弁デイスクが衝撃的に弁座部材
に離着座して弁デイスクや弁座部材が損傷し易か
つたが、本考案では弾性部材が弁デイスクの衝撃
的な離着座を緩衝するので、損傷を防止できる。 In the conventional valve disc, the valve disk could be easily damaged by the shock when the valve disk was separated from the valve seat member, but in the present invention, the elastic member cushions the impact when the valve disk is separated from the valve seat. , damage can be prevented.
実施例
上記の技術的手段の具体例を示す実施例を説明
する。Example An example showing a specific example of the above technical means will be described.
本体１にほぼ同一軸上に設けた流入口２と流出
口３と、弁座部材４を取り付ける凹部５を形成す
る。流入口２はスクリーン６を通して凹部５の中
央に連通し、流出口３は凹部５の周辺に連通す
る。 An inlet 2 and an outlet 3 provided substantially on the same axis in the main body 1, and a recess 5 in which a valve seat member 4 is attached are formed. The inlet 2 communicates with the center of the recess 5 through the screen 6, and the outlet 3 communicates with the periphery of the recess 5.
凹部５に二条の環状ガスケツトを介して弁座部
材４を配置し、凹部５の内周の側壁に螺着した内
蓋７で本体１に締結する。弁座部材４と内蓋７の
間に変圧室８を形成する。 A valve seat member 4 is placed in the recess 5 via two annular gaskets, and is fastened to the main body 1 with an inner lid 7 screwed onto the inner peripheral side wall of the recess 5. A variable pressure chamber 8 is formed between the valve seat member 4 and the inner lid 7.
弁座部材４の中央を貫通して流入孔９を設けて
流入口２と連通させると共に、周辺に環状溝１０
を設けて流出孔１１を通して流出口３に連通さ
せ、流入孔９と環状溝１０の間に環状の内輪弁座
１２を、環状溝１０の外側に環状の外輪座１３を
形成する。変圧室８内に内外輪弁座１２，１３に
同時に離着座する弁デイスク１４を遊置する。内
蓋７の外側に外蓋１５をガスケツトを介して螺着
し、通孔１６を通して流入口２側に連通する保温
室１７を形成する。 An inflow hole 9 is provided through the center of the valve seat member 4 to communicate with the inflow port 2, and an annular groove 10 is provided around the periphery.
An annular inner ring valve seat 12 is formed between the inlet hole 9 and the annular groove 10, and an annular outer ring seat 13 is formed outside the annular groove 10. A valve disk 14 is placed in the variable pressure chamber 8 and is seated on and off the inner and outer ring valve seats 12 and 13 at the same time. An outer cover 15 is screwed onto the outside of the inner cover 7 via a gasket to form a heat preservation chamber 17 communicating with the inlet 2 through a through hole 16.
外輪弁座１３の外周に平坦面１８を形成し、バ
イメタル環１９を配置する。バイメタル環１９と
弁デイスク１４の間に環状板２０を配置する。環
状板２０の外径はバイメタル環の拡開時の内径よ
りも小さく縮閉時の外径よりも大きく形成し、内
径は外輪弁座１３の外周よりもわずかに大きく形
成している。環状板２０の下面に弁デイスク１４
を開弁方向に付勢するコイルバネ２１を配置す
る。 A flat surface 18 is formed on the outer periphery of the outer ring valve seat 13, and a bimetal ring 19 is arranged. An annular plate 20 is arranged between the bimetallic ring 19 and the valve disc 14. The outer diameter of the annular plate 20 is smaller than the inner diameter of the bimetal ring when it is expanded and larger than the outer diameter when it is retracted and closed, and the inner diameter is slightly larger than the outer circumference of the outer ring valve seat 13. A valve disk 14 is provided on the underside of the annular plate 20.
A coil spring 21 is arranged to bias the valve in the valve opening direction.
上記の実施例の作動を説明する。 The operation of the above embodiment will be explained.
休止時にはコイルバネ２１が弁デイスク１４を
持上げて開弁している。このとき、バイメタル環
１９は環状板２０の外径よりも小さく縮閉して環
状板２０の下方に入り込んでいる。 When the valve is at rest, the coil spring 21 lifts the valve disk 14 to open the valve. At this time, the bimetal ring 19 contracts and closes to be smaller than the outer diameter of the annular plate 20 and enters below the annular plate 20.
始動時に低温の復水や空気が流入してきて、空
気が弁デイスク１４の下面を通過すると、弁デイ
スク１４には閉弁力が作用して環状板２０を介し
てコイルバネ２１を圧縮するが、環状板２０の下
面がバイメタル環１９に当接した後は、それ以上
下方に変位できない。すなわち、弁デイスク１４
は閉弁できず、エアーロツキングを防止する。 When low-temperature condensate and air flow in during startup and the air passes through the lower surface of the valve disk 14, a valve-closing force acts on the valve disk 14 and compresses the coil spring 21 via the annular plate 20. After the lower surface of the plate 20 contacts the bimetal ring 19, it cannot be displaced downward any further. That is, the valve disk 14
The valve cannot be closed and prevents air locking.
その後、高温の復水が流入してきて、温度が上
昇すると、バイメタル環１９は拡開し始める。そ
して、内径が環状板２０の外径よりも大きくなつ
たときに、環状板２０の下面から外れ、弁デイス
ク１４に干渉しなくなる。 Then, as high temperature condensate flows in and the temperature rises, the bimetallic ring 19 begins to expand. When the inner diameter becomes larger than the outer diameter of the annular plate 20, it comes off from the lower surface of the annular plate 20 and no longer interferes with the valve disk 14.
以後周知のデイスク式スチームトラツプの作動
原理に基づいて蒸気は逃さず復水のみを排出す
る。 From then on, based on the operating principle of the well-known disk type steam trap, only condensate water is discharged without allowing steam to escape.
第１図は本考案の実施例のデイスク式スチーム
トラツプの断面図である。
４……弁座部材、８……変圧式、１０……環状
溝、１２……内輪弁座、１３……外輪弁座、１４
……弁デイスク、１８……平坦面、１９……バイ
メタル環、２０……環状板、２１……コイルバ
ネ。
FIG. 1 is a sectional view of a disc type steam trap according to an embodiment of the present invention. 4... Valve seat member, 8... Transformer type, 10... Annular groove, 12... Inner ring valve seat, 13... Outer ring valve seat, 14
... Valve disk, 18 ... Flat surface, 19 ... Bimetal ring, 20 ... Annular plate, 21 ... Coil spring.
Claims (1)
環を配置し、バイメタル環の拡開時の内径よりも
小さく縮閉時の外径よりも大きな外径に形成した
環状板を、バイメタル環と弁デイスクとの間に配
置し、弁デイスクを開弁位置に付勢する弾性部材
を、環状板の下面に配置した、デイスク式スチー
ムトラツプ。 The outer periphery of the outer ring valve seat is formed into a flat surface and a bimetal ring is arranged, and the annular plate is formed to have an outer diameter smaller than the inner diameter when the bimetal ring is expanded and larger than the outer diameter when it is retracted. A disc-type steam trap in which an elastic member is placed on the lower surface of the annular plate and is placed between the valve disk and biases the valve disk to the open position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17414587U JPH0444960Y2 (en) | 1987-11-13 | 1987-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17414587U JPH0444960Y2 (en) | 1987-11-13 | 1987-11-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0177199U JPH0177199U (en) | 1989-05-24 |
| JPH0444960Y2 true JPH0444960Y2 (en) | 1992-10-22 |
Family
ID=31466020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17414587U Expired JPH0444960Y2 (en) | 1987-11-13 | 1987-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0444960Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4503167B2 (en) * | 2000-11-15 | 2010-07-14 | 株式会社テイエルブイ | Disc type steam trap |
| JP4503166B2 (en) * | 2000-11-15 | 2010-07-14 | 株式会社テイエルブイ | Disc type steam trap |
-
1987
- 1987-11-13 JP JP17414587U patent/JPH0444960Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0177199U (en) | 1989-05-24 |
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